According to Newton’s First Law, an object stays at rest or moves uniformly unless acted on by an external force; Newton’s Second Law states that force equals mass times acceleration (F = ma), which is also the rate of change of momentum; …

Optics is the branch of physics that deals with the behavior and properties of light, including its reflection, refraction, dispersion, and interference; it covers the study of mirrors and lenses, where reflection follows the law that the angle of …

Thermal physics is the branch of physics that deals with heat, temperature, and the transfer of thermal energy, including concepts like thermal expansion, specific heat capacity, and the three modes of heat transfer—conduction, convection, and …

Electricity is the branch of physics that deals with electric charges, currents, and their effects, covering concepts like electric potential, resistance, and Ohm’s law which states that current is directly proportional to voltage and inversely …

Acoustics is the branch of physics that studies the production, transmission, reception, and effects of sound waves, covering concepts like frequency, wavelength, amplitude, and speed of sound in different media; it includes the study of reflection …

Nuclear physics is the branch of physics that studies the structure, properties, and interactions of atomic nuclei, covering concepts like radioactivity, nuclear fission, and nuclear fusion; it includes the study of alpha, beta, and gamma decay, …

Atoms and Molecules is the branch of science that deals with the fundamental building blocks of matter, where atoms are the smallest particles of an element that retain its chemical properties, and molecules are formed when two or more atoms combine …

Periodic Classification of Elements is the systematic arrangement of elements based on their atomic number, electron configuration, and recurring chemical properties, which led to the development of the modern periodic table; it includes the study of …

Solutions are homogeneous mixtures of two or more substances, consisting of a solute (the substance that dissolves) and a solvent (the substance that does the dissolving), and they can exist in solid, liquid, or gaseous states; the chapter covers …

Types of Chemical Reactions covers the classification of chemical changes into five main types: combination (two or more substances combine to form a single product), decomposition (a single compound breaks down into simpler substances), displacement …

Carbon and its Compounds is the study of the element carbon, which is unique due to its tetravalency and ability to form strong covalent bonds with itself and other elements, leading to millions of organic compounds; it covers the classification of …

Plant Anatomy and Plant Physiology is the study of the internal structure and functioning of plants, where anatomy covers tissues (meristematic and permanent), tissue systems (epidermal, ground, and vascular), and the anatomy of root, stem, and leaf; …

Structural Organisation of Animals deals with the hierarchical arrangement of cells, tissues, organs, and organ systems that make up the animal body, covering the four basic types of tissues—epithelial, connective, muscular, and nervous tissue—along …

Transportation in Plants and Circulation in Animals covers the movement of water, minerals, and food throughout plant bodies using xylem (water and minerals upward) and phloem (food both ways), driven by transpiration pull, root pressure, and …

The Nervous System is the master control and communication system of the body, consisting of the central nervous system (brain and spinal cord) and the peripheral nervous system (nerves branching throughout the body), which work together to receive …

Plant and Animal Hormones is the study of chemical messengers that regulate growth, development, metabolism, reproduction, and behavior in living organisms, where plant hormones (phytohormones) include auxins, gibberellins, cytokinins, abscisic acid, …

Reproduction in Plants and Animals is the biological process by which organisms produce new individuals of their own kind, ensuring the continuation of species, and is broadly classified into asexual reproduction (involving a single parent, without …

Genetics is the branch of biology that deals with the study of heredity, variation, and the transmission of traits from parents to offspring through genes, which are segments of DNA located on chromosomes; it covers Mendel’s laws of inheritance …

Origin and Evolution of Life deals with the theories and evidence regarding how life began on Earth and how it has changed over millions of years, covering the origin of the universe, the Miller-Urey experiment on chemical evolution, and the gradual …

Breeding and Biotechnology is the branch of biology that deals with the improvement of plants and animals through selective breeding techniques and modern biotechnological tools, where breeding includes methods like inbreeding, outbreeding, …

Health and Diseases is the study of physical, mental, and social well-being, along with the causes, transmission, prevention, and treatment of various diseases, where diseases are broadly classified into infectious (caused by pathogens like bacteria, …

Environmental Management is the systematic approach to understanding and solving environmental problems, focusing on the sustainable use of natural resources, conservation of biodiversity, and control of pollution (air, water, and soil); it covers …

Visual Communication is the practice of conveying ideas, information, and messages through visual elements such as images, symbols, colors, typography, and design, rather than through text or spoken words alone; it covers the principles of design …